Effect of pH value and fluoride ions on corrosion resistance of pure Ti and Ni-Cr-Ti alloy in artificial saliva / 浙江大学学报·医学版
Journal of Zhejiang University. Medical sciences
;
(6): 399-403, 2010.
Artigo
em Chinês
| WPRIM
| ID: wpr-319887
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of pH value and fluoride ions on the corrosion resistance of pure Ti and Ni-Cr-Ti alloy in the artificial saliva.</p><p><b>METHODS</b>Electrochemical technique was used to measure the electric potential of corrosion (Ecorr), current density of corrosion (Icorr) and polarization resistance (Rp) of pure titanium and Ti-Ni-Cr alloy in the artificial saliva with different pH value and fluoride concentrations. After electrochemical analysis, microstructure and phase diffraction were examined by FSEM.</p><p><b>RESULTS</b>With the lower pH value, the Ecorr and Icorr of pure titanium and Ti-Ni-Cr alloy increased, the Rp decreased, there was a significant difference (P<0.05). The Ecorr and Icorr increased markedly, the Rp significantly reduced in the artificial saliva containing 0.2% NaF (P<0.01). FSEM showed that pure titanium and Ti-Ni-Cr alloy surface corrosion, pure titanium in the artificial saliva containing 0.2% NaF was most serious.</p><p><b>CONCLUSION</b>Lower pH value decreases the corrosion resistance of pure titanium and Ti-Ni-Cr alloy and the artificial saliva containing fluoride ions decreases the corrosion resistance of pure titanium.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Saliva Artificial
/
Propriedades de Superfície
/
Titânio
/
Teste de Materiais
/
Química
/
Ligas de Cromo
/
Ligas Metalo-Cerâmicas
/
Corrosão
/
Ligas Dentárias
/
Eletroquímica
Idioma:
Chinês
Revista:
Journal of Zhejiang University. Medical sciences
Ano de publicação:
2010
Tipo de documento:
Artigo
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